EXTRA-TROPICAL  STORM  SURGE
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hat-on
mhhw-on
msl-on
mllw-on
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Gulf of Alaska
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Surge List
Gulf of Alaska
#Nikiski, AK : 04/20/2026 18:21:50 GMT (units in feet MLLW)
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
04/19 00Z,  -0.20,  14.48,  13.90,  99.90,  -0.38,
04/19 01Z,  -0.10,  19.30,  18.56,  99.90,  -0.64,
04/19 02Z,  -0.10,  21.75,  21.26,  99.90,  -0.39,  (max)
04/19 03Z,   0.00,  21.43,  21.06,  99.90,  -0.37,
04/19 04Z,   0.00,  18.50,  17.91,  99.90,  -0.59,
04/19 05Z,   0.00,  13.86,  13.04,  99.90,  -0.82,
04/19 06Z,   0.00,   8.84,   8.40,  99.90,  -0.44,
04/19 07Z,   0.00,   4.61,   4.30,  99.90,  -0.31,
04/19 08Z,   0.00,   1.99,   1.32,  99.90,  -0.67,
04/19 09Z,   0.10,   2.12,   1.29,  99.90,  -0.93,  (min)
04/19 10Z,   0.20,   5.86,   6.45,  99.90,   0.39,
04/19 11Z,   0.20,  12.13,  12.51,  99.90,   0.18,
04/19 12Z,   0.10,  18.27,  17.67,  99.90,  -0.70,
04/19 13Z,   0.10,  22.43,  21.79,  99.90,  -0.74,
04/19 14Z,   0.20,  24.02,  23.68,  99.90,  -0.54,  (max)
04/19 15Z,   0.20,  22.89,  22.61,  99.90,  -0.48,
04/19 16Z,   0.20,  19.19,  18.57,  99.90,  -0.82,
04/19 17Z,   0.10,  13.62,  13.10,  99.90,  -0.62,
04/19 18Z,   0.20,   7.37,   8.00,  99.90,   0.43,
04/19 19Z,   0.20,   1.67,   2.87,  99.90,   1.00,
04/19 20Z,   0.20,  -2.62,  -1.60,  99.90,   0.82,
04/19 21Z,   0.20,  -4.53,  -4.34,  99.90,  -0.01,  (min)
04/19 22Z,   0.20,  -2.80,  -3.28,  99.90,  -0.68,
04/19 23Z,   0.30,   2.56,   3.05,  99.90,   0.19,
04/20 00Z,   0.30,   9.43,   9.75,  99.90,   0.02,
04/20 01Z,   0.30,  15.46,  15.12,  99.90,  -0.64,
04/20 02Z,   0.30,  19.58,  19.30,  99.90,  -0.58,
04/20 03Z,   0.40,  21.36,  21.23,  99.90,  -0.53,  (max)
04/20 04Z,   0.60,  20.52,  20.36,  99.90,  -0.76,
04/20 05Z,   0.60,  17.34,  16.95,  99.90,  -0.99,
04/20 06Z,   0.60,  12.77,  12.23,  99.90,  -1.14,
04/20 07Z,   0.60,   8.12,   8.04,  99.90,  -0.68,
04/20 08Z,   0.60,   4.50,   4.42,  99.90,  -0.68,
04/20 09Z,   0.60,   2.70,   2.27,  99.90,  -1.03,  (min)
04/20 10Z,   0.60,   3.75,   3.57,  99.90,  -0.78,
04/20 11Z,   0.70,   8.15,   9.02,  99.90,   0.17,
04/20 12Z,   0.80,  14.31,  14.38,  99.90,  -0.73,
04/20 13Z,   0.70,  19.66,  18.93,  99.90,  -1.43,
04/20 14Z,   0.70,  22.77,  22.25,  99.90,  -1.22,
04/20 15Z,   0.70,  23.41,  23.18,  99.90,  -0.93,  (max)
04/20 16Z,   0.70,  21.58,  21.26,  99.90,  -1.02,
04/20 17Z,   0.80,  17.50,  16.79,  99.90,  -1.51,
04/20 18Z,   0.80,  11.90,  11.54,  99.90,  -1.16,
#------------------------------------------------------------
#Date(GMT), Surge,   Tide,    Obs,   Fcst,   Anom, Comment
#------------------------------------------------------------
04/20 19Z,   0.80,   5.97,  99.90,   5.67,  -1.09,
04/20 20Z,   0.80,   0.83,  99.90,   0.61,  -1.02,
04/20 21Z,   0.70,  -2.74,  99.90,  -3.00,  -0.96,
04/20 22Z,   0.80,  -3.85,  99.90,  -3.94,  -0.89,  (min)
04/20 23Z,   0.80,  -1.44,  99.90,  -1.45,  -0.82,
04/21 00Z,   0.80,   4.06,  99.90,   4.12,  -0.75,
04/21 01Z,   0.80,  10.41,  99.90,  10.53,  -0.68,
04/21 02Z,   0.70,  15.64,  99.90,  15.73,  -0.61,
04/21 03Z,   0.70,  19.06,  99.90,  19.22,  -0.54,
04/21 04Z,   0.70,  20.38,  99.90,  20.61,  -0.47,  (max)
04/21 05Z,   0.60,  19.35,  99.90,  19.55,  -0.40,
04/21 06Z,   0.50,  16.25,  99.90,  16.42,  -0.33,
04/21 07Z,   0.50,  12.03,  99.90,  12.20,  -0.33,
04/21 08Z,   0.40,   7.99,  99.90,   8.06,  -0.33,
04/21 09Z,   0.30,   5.08,  99.90,   5.05,  -0.33,
04/21 10Z,   0.30,   3.96,  99.90,   3.93,  -0.33,  (min)
04/21 11Z,   0.30,   5.55,  99.90,   5.52,  -0.33,
04/21 12Z,   0.20,   9.98,  99.90,   9.85,  -0.33,
04/21 13Z,   0.20,  15.48,  99.90,  15.35,  -0.33,
04/21 14Z,   0.20,  19.76,  99.90,  19.63,  -0.33,
04/21 15Z,   0.20,  21.93,  99.90,  21.80,  -0.33,  (max)
04/21 16Z,   0.10,  21.98,  99.90,  21.75,  -0.33,
04/21 17Z,   0.10,  19.93,  99.90,  19.70,  -0.33,
04/21 18Z,   0.10,  15.96,  99.90,  15.73,  -0.33,
04/21 19Z,   0.00,  10.77,  99.90,  10.44,  -0.33,
04/21 20Z,   0.00,   5.49,  99.90,   5.16,  -0.33,
04/21 21Z,   0.00,   1.09,  99.90,   0.76,  -0.33,
04/21 22Z,   0.00,  -1.81,  99.90,  -2.14,  -0.33,
04/21 23Z,   0.00,  -2.41,  99.90,  -2.74,  -0.33,  (min)
04/22 00Z,   0.00,   0.17,  99.90,  -0.16,  -0.33,
04/22 01Z,   0.00,   5.23,  99.90,   4.90,  -0.33,
04/22 02Z,   0.00,  10.68,  99.90,  10.35,  -0.33,
04/22 03Z,  -0.10,  15.05,  99.90,  14.62,  -0.33,
04/22 04Z,  -0.10,  17.97,  99.90,  17.54,  -0.33,
04/22 05Z,  -0.10,  19.13,  99.90,  18.70,  -0.33,  (max)
04/22 06Z,  -0.20,  18.21,  99.90,  17.68,  -0.33,
04/22 07Z,  -0.20,  15.47,  99.90,  14.94,  -0.33,
04/22 08Z,  -0.20,  11.84,  99.90,  11.31,  -0.33,
04/22 09Z,  -0.20,   8.50,  99.90,   7.97,  -0.33,
04/22 10Z,  -0.10,   6.18,  99.90,   5.75,  -0.33,
04/22 11Z,  -0.10,   5.42,  99.90,   4.99,  -0.33,  (min)
04/22 12Z,  -0.10,   7.03,  99.90,   6.60,  -0.33,
04/22 13Z,  -0.10,  10.95,  99.90,  10.52,  -0.33,
04/22 14Z,  -0.10,  15.43,  99.90,  15.00,  -0.33,
04/22 15Z,  -0.20,  18.67,  99.90,  18.14,  -0.33,
04/22 16Z,  -0.20,  20.22,  99.90,  19.69,  -0.33,  (max)
04/22 17Z,  -0.20,  20.15,  99.90,  19.62,  -0.33,
04/22 18Z,  -0.30,  18.34,  99.90,  17.71,  -0.33,
04/22 19Z,  -0.30,  14.88,  99.90,  14.25,  -0.33,
04/22 20Z,  -0.40,  10.42,  99.90,   9.69,  -0.33,
04/22 21Z,  -0.40,   5.96,  99.90,   5.23,  -0.33,
04/22 22Z,  -0.40,   2.30,  99.90,   1.57,  -0.33,
04/22 23Z,  -0.50,  -0.18,  99.90,  -1.01,  -0.33,
04/23 00Z,  -0.50,  -0.69,  99.90,  -1.52,  -0.33,  (min)
04/23 01Z,  -0.50,   1.55,  99.90,   0.72,  -0.33,
04/23 02Z,  -0.40,   5.80,  99.90,   5.07,  -0.33,
04/23 03Z,  -0.40,  10.26,  99.90,   9.53,  -0.33,
04/23 04Z,  -0.40,  13.96,  99.90,  13.23,  -0.33,
04/23 05Z,  -0.40,  16.68,  99.90,  15.95,  -0.33,
04/23 06Z,  -0.50,  17.97,  99.90,  17.14,  -0.33,  (max)
04/23 07Z,  -0.50,  17.42,  99.90,  16.59,  -0.33,
04/23 08Z,  -0.50,  15.21,  99.90,  14.38,  -0.33,
04/23 09Z,  -0.50,  12.25,  99.90,  11.42,  -0.33,
04/23 10Z,  -0.50,   9.52,  99.90,   8.69,  -0.33,
04/23 11Z,  -0.50,   7.51,  99.90,   6.68,  -0.33,
04/23 12Z,  -0.50,   6.66,  99.90,   5.83,  -0.33,  (min)
04/23 13Z,  -0.50,   7.79,  99.90,   6.96,  -0.33,
04/23 14Z,  -0.50,  10.84,  99.90,  10.01,  -0.33,
04/23 15Z,  -0.50,  14.24,  99.90,  13.41,  -0.33,
04/23 16Z,  -0.50,  16.71,  99.90,  15.88,  -0.33,
04/23 17Z,  -0.60,  18.09,  99.90,  17.16,  -0.33,
04/23 18Z,  -0.60,  18.35,  99.90,  17.42,  -0.33,  (max)
04/23 19Z,  -0.70,  17.15,  99.90,  16.12,  -0.33,
04/23 20Z,  -0.70,  14.46,  99.90,  13.43,  -0.33,
04/23 21Z,  -0.70,  10.86,  99.90,   9.83,  -0.33,
04/23 22Z,  -0.70,   7.21,  99.90,   6.18,  -0.33,
04/23 23Z,  -0.60,   4.04,  99.90,   3.11,  -0.33,
04/24 00Z,  -0.60,   1.62,  99.90,   0.69,  -0.33,
04/24 01Z,  -0.60,   0.80,  99.90,  -0.13,  -0.33,  (min)
04/24 02Z,  -0.60,   2.40,  99.90,   1.47,  -0.33,
04/24 03Z,  -0.70,   5.75,  99.90,   4.72,  -0.33,
04/24 04Z,  -0.70,   9.41,  99.90,   8.38,  -0.33,
04/24 05Z,  -0.70,  12.77,  99.90,  11.74,  -0.33,
04/24 06Z,  -0.80,  15.61,  99.90,  14.48,  -0.33,
04/24 07Z,  -0.80,  17.27,  99.90,  16.14,  -0.33,
04/24 08Z,  -0.70,  17.20,  99.90,  16.17,  -0.33,  (max)
04/24 09Z,  -0.70,  15.55,  99.90,  14.52,  -0.33,
04/24 10Z,  -0.60,  13.14,  99.90,  12.21,  -0.33,
04/24 11Z,  -0.60,  10.74,  99.90,   9.81,  -0.33,
04/24 12Z,  -0.70,   8.61,  99.90,   7.58,  -0.33,